79765717772 has 24 divisors (see below), whose sum is σ = 150441799200. Its totient is φ = 36787003776.

The previous prime is 79765717763. The next prime is 79765717777. The reversal of 79765717772 is 27771756797.

It is a junction number, because it is equal to n+sod(n) for n = 79765717699 and 79765717708.

It is not an unprimeable number, because it can be changed into a prime (79765717777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512897 + ... + 650072.

It is an arithmetic number, because the mean of its divisors is an integer number (6268408300).

Almost surely, 2^79765717772 is an apocalyptic number.

It is an amenable number.

79765717772 is a deficient number, since it is larger than the sum of its proper divisors (70676081428).

79765717772 is a wasteful number, since it uses less digits than its factorization.

79765717772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164305 (or 1164303 counting only the distinct ones).

The product of its digits is 63530460, while the sum is 65.

The spelling of 79765717772 in words is "seventy-nine billion, seven hundred sixty-five million, seven hundred seventeen thousand, seven hundred seventy-two".